exam Maths Puzzle Numerical Ability

How do you begin to solve -4x+2y=10 over 6x+2y=10

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please help me solve this question: the following two lines interect at point P; 4x-3y=6, 4x-y=10 what are the coordinates of the point P? Let y vary directly with x, with a constant of variation k = 3. Graph the equation of variation.